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Tunnel ground deep-hole sleeve valve tube grouting construction method

A sleeve valve pipe grouting and construction method technology, which is applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of radial grouting and curtain grouting that cannot meet the construction needs, safety problems, water leakage, etc. Achieve the effects of controlling the grouting range and depth, strengthening the soil, and improving the strength

Inactive Publication Date: 2016-06-29
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the serious leakage of water in the tunnels that have been put into operation, and the traditional radial grouting and curtain grouting can no longer meet the construction requirements and other safety problems. A sleeve valve with deep holes on the surface of the tunnel is specially provided. Pipe grouting construction method

Method used

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  • Tunnel ground deep-hole sleeve valve tube grouting construction method
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  • Tunnel ground deep-hole sleeve valve tube grouting construction method

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Embodiment 1

[0029] The invention provides a grouting construction method for sleeve valve pipes with deep holes on the surface of tunnels, which is characterized in that: the grouting construction method for sleeve valve pipes with deep holes on the surface of tunnels is to process the tunnels that have been in operation, first The construction joints in the cave are treated with polyurethane waterproof material;

[0030] Then drill holes at a certain depth in the formation at a certain angle, place the sleeve valve pipe, pre-fill the shell material, the sleeve valve pipe will remain in the soil permanently, and reserve the slurry at a certain interval for the sleeve valve pipe hole, put the rubber water injection sealer in the sleeve valve tube, and add a stop valve at the grout inlet. Grouting method for grouting, and finally check the grouting effect, if the effect is not good, repeat grouting;

[0031] A pile with the borehole as the core is produced in the soil, and a tree root netw...

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Abstract

A tunnel ground deep-hole sleeve valve tube grouting construction method is used for treating an operating tunnel and is characterized in that first a construction joint in the tunnel is treated and a polyurethane waterproof material is adopted; then a bore with a certain depth is constructed at an angle in strata, a sleeve valve tube is arranged, a casing material is pre-poured, the sleeve valve tube stays in soil permanently, grout outlet holes are reserved in the grouted sleeve valve tube at intervals, a water-injection rubber hole packer is placed in the sleeve valve tube, and a stop valve is additionally arranged at a grout inlet; during grouting, water is injected into the water-injection rubber hole packer to block a grouting tube, and a to-be-grouted part is grouted by a retreating grouting method; and finally, the grouting effect is checked, and grouting is performed repeatedly if the effect is bad. The tunnel ground deep-hole sleeve valve tube grouting construction method has the advantages as follows: the working efficiency is increased; and the method is implemented in combination with in-tunnel grouting blockage, thus improving and radically changing the physical and mechanical properties of a foundation and a load-bearing action mechanism, increasing soil strength, reducing deformation and achieving the purposes of reinforcing soil and blocking water gaps.

Description

technical field [0001] The invention relates to a tunnel grouting construction technology, in particular to a tunnel surface deep hole sleeve valve pipe grouting construction method. Background technique [0002] At present, tunnel seepage water treatment mainly includes tunnel radial grouting, tunnel surrounding rock advance peripheral grouting and curtain grouting, which is only suitable for small areas and local parts with small water output during tunnel excavation. Extensive water seepage occurred in high-speed railway tunnels that have been in operation. Traditional radial grouting and curtain grouting can no longer meet their needs. [0003] However, since the tunnel is an underground project, the interior of the surrounding rock is relatively hidden, it is difficult to explore the internal structure, and the geological characteristics are unpredictable. The geological lithology is poor, and through the shallow buried section, some tunnels have serious water gushing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E21D11/38
CPCE02D3/12E21D11/381
Inventor 陆洪平程宏张利任琪高尚王众举
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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